Window-operating mechanism



sept. 11, 192s. Y 1,683,914

F. J. PFIFFER WINDOW OPERATING MECHANISM Filed June 21. 1926 2 Sheets-Sheet 1 6R01 nu;

Sept. 11, 1,928.

WINDOW OPERATING MECHANI SM Filed June 21, '1926 2 sheets-snm 2 l7a, "Si 1 28 24 t so ,96 se 4/ /6 l 5 7 i l5 a5 Z4 l 35 zz Z0 Z9 Z E 7 \L 4 39 A f'ic I 80"* 5o Z3 y 55 37* ZZ 42 4/ 29 x. f Z6 n Z7 A. *Y V4. 54' gru/vento@ ea ae 35 Z5 /feeo JOHN PF/FFE/z Ze BZ 3/ Patented Sept. 11, 1928.

Unirse STATE-s FRED JOHN PFIFFER, OF LOS ANGELES, CALIFORNIA.

WINDOW-OPERATING MECHANISM.

Applcationled .Tune 21, 1926.` SerialrNo. 117,442.

My invention i'elates to windows of the sliding sash type, and particularly to operating mechanisms therefor.

It is a purpose of my invention to provide a mechanism by which the sliding sashes of windows can be manually operated to occupy completely closed or open position 'and in 'intermediate position, t-he mechanism being characterized by instrumentalitieswhich function automatically to lock either sash in closed or open position. y

l will describe only one form of window operating mechanism embodying `my Vinvention and will then point out the novel features thereof in claims. I

ln the accompanying drawings,

Figure 1 is a view showing in side elevation and partly in section one fo 1in of window operating mechanism embodying my invention; c

Figure'2 is a central vertical sectional view taken at right angles to Figure 1;

Figure 3 is a horizontal sectional view taken on the line 3 8 of Figure 2; 'n

Figure 4l is a viewsimilar to Figure l'showing one extreme posit-ion of the mechanism..

Referring specifically to the drawings,` in which similaireference characters refer to similar parts in each of the views, my invention, in its present embodiment, comprises a pair of rack bars R and R, one verticaledge of which is offset, as indicated at 15, and provided with openings through which the screws 16 extend for securing the bars to one andthe same vertical edge of a pair of sliding window sashes S and S. rlliese rack bars R and R are inr the form of strips of metal provided at regular intervals along the length thereof with openings in which the teeth of gears are adapted to engage. As clearly Villustrzvted in Figure 3, theraclr bars by .virtue ofthe offs-et edges are spaced from the vertical edges of the window sashes, the free verticalv edges of the bars being engaged, respectively, by strips of metal 17 and 17a bent upon themselves'and secured inthe window frame by means of screws 18 to form limiting runners for the raclr bars to maintain the latter in operative engagement with operating gears and yetV allow of a limited edgewise or horizontal movement of the window sashes so that the latter will have sufficient play to insure of proper movement thereof vertically within the Window frame.

Within one side of the Window frame Ais secured a Vframe having a back portion 19 and side portions 20 in which latter is mounted an axle 21 with gears 22 and 23 freely rotatable thereon and in slots 24 of the back 19, so as to have` operative engagement with vthe rack bars R and R', respectively. These gears 22 and 2 3 constantly mesh with pinions 25 and 26, respectively, the-latter being freely rotatable on a shaft 27 journaled in the sides 20 of the frame. The, pinions are provided with slotted hubs 25ay and 26, respectively, the slots of which are adapted to receive pins 28 and29, so as to key the pinions to the shaft,

and therebyy permit actuation of the pinionV when the shaft is rotated. Theshaft 27 is capable of longitudinal movement in the frame, and its outer end is provided with a crank 30 which projects from therinner side of the window framer for manual. actuation to rotate the shaft in either direction and to move the shaft longitudinally in either direc Y tion. Y f

On the shaft 27 between the pinions 25 and 26 isa sleeve 31 which operates to maintain the pinions in definite spaced relation. Freely movable on the sleeve 31 is a wheel 32 keyed spectively. These pawls arepivoted on the Y axle 21 and yieldably urged into locking engagement.withl the pinions by means of springs 39 trained about the aXle and having engagement with a lip 40 on the upper end of the frame. Arms 41 and v42 extend'laterally from the confronting sidesrof the pawls and 38 with their tree ends bent downwardly to provide cams adapted to he engaged by the wheel tor moving the pawls to released wsition.

rlhe operation of the mechanism is as iollows: Vfith the parts in the normal position as shownv in Figurel l, both pawls S7 and 3&5 engage the pinions and 25 to prevcntrotation ther-cot by the shaft 27 or by the gears l is pulled outwardly to the extreme position` shown .in li1 i'gure el, wherein the pin 28 engages the hub 25 so as to provide an operative connect-ion betfveenv the pinionQ and the shaft. in moving the shaft to this extreme position, a corresponding movement et the wheel 32 is eilfect'ed so that the spring 35 is iown in Figure Y During this'lateral movenient. ot the'wheel', 'it engages the cam end of the arm 4l, thereby elevating the' pawl 37' out ot engagement with the pinion 25 so thatv upon rotation ot the shaft 27 the pinion will liz-e' actuated to rotate the gear 22 and through the medium ot the corresponding rack R lower or elevate the sash S according as the sl'ia'lt 27 is rotated in one direction or the other. As this lateral movement ot the wheel 32 's-inelicctive to actuate the arm 42, the

pa wl''v remains in locking engagement with the' pinion 26, andthus retains'the other sash S in locked position.

From the 'foregoing' operation, it' will he understood that to raise or lower the sash it is only necessary to move' the shaft- 27 longitudinally toits other extreme position inwhich thepinion 26 through the medinm ot vthe slotted hub 26a and the key 29 function to operatively connect. the pinion to the shaft, the wheel 32 being shifted laterally in the other direction and engaging the cam end ot the arm Lt2 to elevate the pawl 38 and thus release the pinion 26 so that upon rotation ot the shaft 2.7 the gear 23 is actuated to raise or lower the sash S according as the shaft is rotated in one direction or the other. During this operation, the pawl 37 remains in locked position with respect to the pinion 25 so that the sash'S isyas a consequence retained in locked position.

Although I have herein shown and de- Ascribed only= one fo m ot window operating mecl'ianism embodying my invention, it is to `'beunderstood that various vchanges and cit-pandedl andthe spring 8G compressed, asv

and the spirit and scope of the appended claims.

l claim as my invention:

l. A window operating mechanism comprising two gear and rack means tor elevating and lowering the two sliding sashes ota window, manually operable meanscoinmon to botl-i-o-t said means 'tor actuating either means independent-ly oft the other, and locking means for each of the gear and rack means normally actingv to lock both et saidmeans and singly releasahle by the manually oper- Aable means to' permit actuation et the res pective gear and rack means.

A window operating .mechanism` comprising two gear and rack means' tor elevating and lowering the two sliding sashes' of a window, and a shaft movable to either of Y two extreme positions in which it Ycan vbe manually rotated to actuate one gear and yrack meansor the other accordingas it occupies one 'extreme posit-ion or the other, and

means for yieldably urgingthe shaft toan intermediate positionin which nci-thergear and rack meansl can be operated: Y

3. A window yoperating mechanismV comprising two gear and rack means 'for elevating and lowering the two sliding sections of the window, a shaftV mounted'toi rotate and movable longitudinally to eitl'ie'r of twoextreme positions, and anA intermediate' position,

and two pini ons on the shaft having operative connection with the gear and rack means for actuating the latter when rotating,l said pinons ireelyr rotatable ont-he shattwhen the latter is in intermediate position, and means by which one pinion or the other is l-:eyed to the shaft tor rotation thereby, acfion cording as the shaitt occupies one extreme 'i when the latter is in' intern'iediate posit-ion,Y

means for keying one pinion or the other to the shaft according ras the shaft is Amoved to one extreme position orV the V other so that when rotated it will actuate one pinion or the other, and means for yieldably urging the shaft to the intermediate position;

ot two eX-V Vim 5. A window 'operating VmechanismV comprising` two gear and rack means tor elevatingl and lowering the two sliding sections ot the window, a shalt mounted to rotate andinovable longitudinally to either of two extreme positions and an intermedialtev position, two pinions on the shaft having operativeconnection with the gear and rack'means for actu'- ating the latter when rotating, said pinions freely rotatable on the shaft when the latter' is in intermediate position, means for keying one pinion or the lother to th'eshaft according as t-he shaftis moved to one, extreme position or the other sothat when rotat'e'fdit will? 'actriate one pinion or the other, means for yieldably urging the sha-ft to the intermediate position, a pair of pawls one for each of the pinions for locking the latter against actuation and yieldably urged to locking position', and a wheel urged to a neutral' position with respect to the pawls and operable upon longitudinal movement of the shatt to move one pawl or the other to released position according as the shaft occupies one extreme position or the other.

6. A window operating mechanism coinprising two gear and rack means for elevating and lowering the two sliding sections of the window, a shaft mounted to rotate and movable longitudinally to either of two extreme positions and an intermediate position, two pinions on the shaft having operative connection with the gear and rack means for actuating the latter when rotating, said ping ions freely-rotatable on the shaft when the latter is in intermediate position, means for keying one pinion or the other to the shaft according as the shaft is moved to one extreme position or t-he other so that when rotated it will actuate one pinion or the other, means for yieldably urging the shaft to the intermedia-te position, a pair of pa-wls one for each of the pinions for locking the latter against actuation and yieldably urged to locking position, arms on the pawls having cams, and a wheel movable longitudinally with the shaft to engage one camv or the other according as the shaft is moved to one extreme position 6r the other and to, therefore, move one pa wl or the other to released position with respect to the corresponding pinion.

7. A window operating mechanism comprising gear and rack means including rack bars adapted to be secured to the edges of sliding window `sashes and gears engaging the rack bars, and means for maintaining the rack bars in operative engagement with the gears irrespective of the horizontal movement of the window sashes.

S. A window operating mechanism as embodied in claim 7 wherein said means com-v prises stripsadapted to be secured to the window frame and engaging the rack bars.

9. A window operating mechanism comprising two gear and rack means for elevating and lowering the twosliding sashes of a window, and manually operable means common to both of said means for actuating the latter and including clutch means by which either of said two means can be operatively connected to said actuating means independently of the'other. j l' 10. A windowy operating mechanism comprising two gear and rack means for elevating and lowering the twosliding sashes window, a shaft mounted to rotate and mov-l able longitudinally to any one of three positions, two means rotatable on the shaft when in one of its positions, and having operative connection with the first means for actuating the latter, and means by which one or the other of said two rotatable means is operatively conn cted to the shaft for rotation thereby according as the shaft occupies one or the other of its other' two positions, whereby one or the other of first said two means can be actuated.

12. A window operating mechanism as embodied in claim ll wherein means is provided for yieldingly urging the shaft to the first one of its positions. Y Y

13. A window operating mechanism comprising two means for elevating and lowering the two sliding sections of a window, a shaft mounted to rotate and movable longitudinally to any one of three. positions, two means rotatable von the shaft when in one of its positions, and having operative connection with the first means for actuating the latter, means by which one or the other of said two rotatable means is operatively connected to the shaft for rotation thereby according as the shaft occupies one or the other of its other two positions, whereby one or the other of first said two means can be actuatechtwo means, one for each of said two rotatable means for locking the latter against rotation and normally occupying a locking position, and means operable upon longitudinal movement of the shaft to move one or the other of said locking means to a released position according as the shaft occupies oner or the otherof its other two positions. f

11i. A window operating mechanism comprising two means for elevating and lowering the two sliding sections of a-window, a shaft mounted to rotate and movable longitudinally to any one of three positions, two `means rotatable on the shaft when in one of its positions, and having operative connection with the first means for actuating the latter, means by which one or the otherl of said two rotatable means is operatively connected'to the shaftl ablelne'itudnally. With theshait to engage one canrmeans vor the otherr aceording as'` the lshaft s movedtolone orthe other ofjts other two positions and to .thereby move one locking meansor the other toA released postlonwth respeottothe Corresponding oneI ofthe two i` rotatable means.

FRED. JOHN PRIMER; 

